Compensator for carbureter air-supply.



. L. WILHELM.

COMPENSATOR FOR CARBURETER AIR SUPPLY.

APPLICATION FILED ocr.12.191e.

C 3,3 I2 L 13 FFIQE. I

LOUIS WILHELM, OF NEW HAVEN, CONNECTICUT.

COMPENSATOR FOR CARBURE'IER AIR-SUPPLY.

Specification of Letters Patent.

Patented Jan. 21, 1919.

Application filed October 12, 1918. Serial No. 257,829.

To all whom it may concern:

Be it known that. L-Lotns 'WILHELM, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Compensators for Carbureter Air-Supply; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a side view of a compensator for carbureter air supply, with the cover for the cold air opening raised.

Fig. 2 a top or plan view of the same, with the cover for the cold air opening removed.

Fig. 3a vertical sectional view with the cover for the cold air opening closed.

This invention relates to an improvement in compensators for carbureter air supply. It is a common practice to supply air to a carbureter from a chamber heated by the exhaust, but under many conditions.the heat from the exhaust is so great that the air de livered to the carbureter is raised in temperature above the desired point.

The object of this invention is to provide a compensator or regulator through which air passes from the exhaust heater to the carbureter and which is automatic in action so that as the air from the exhaust heater rises above a predetermined point, cold air will be admitted to lower the temperature of such air; and the invention consists in the construction hereinafter described and point ed out in the claims.

In carrying out my invention I employ a casing 4 formed at one side near the top with an opening adapted to be connected by a pipe 5 with the usual air chamber heated by the exhaust which is not shown. At the opposite side of the casing near the b0ttom is an opening into a tube 6 to the usual carbureter which is also not shown. Within the casing I arrange horizontal baffle plates 7 and 8 by which heated air entering the chamber will be deflected in a circuitous path to the carbureter. In the bottom of the casing I mount an expansion chamber 9 of any preferred construction and extending upward from this chamber is a rod 10 which passes through clearance notches 11 formed in the bafile plates 7 and 8, and is provided at its upper end with an adjusting screw 12 which bears against the underside of a cover 13 which closes an opening 14 in the top of the casing. This cover is hinged to the casing upon a pintle 22 and is normally held in its closed position by one end 15 of the spring which is coiled around and fixed to a shaft 16 which is mounted in bearings so as to be turned to vary the tension of the spring. This shaft may be locked in its adjusted position by means of a screw 17 which extends through a bearing 18 into engagement with the shaft. The vertical rod 10 also passes through an eye 19 formed in the end of a horizontally arranged adjusting rod 20 which projects outward through the casing and is adapted to be held in its adjusted position by means of a set screw 21. By moving the upper end of the rod 10 toward or from the pintle of the cover 13 the movement of that cover will 'be accelerated or retarded as desired. Air

heated by the exhaust passes into the casing and to the carbureter and when it exceeds a certain temperature the chamber 9 will be expanded so as to lift the rod 10 and raise the cover 13 to admit cold air through the opening 14. This cold air mingles with the hot air, and owing to the baffle plates this mixture is complete before it passes to the carbureter. As the temperature of the air decreases the expansion chamber contracts and the cover closes the cold air opening so that the temperature of the air admitted to the carbureter is maintained at an even point best adapted for the perfect Working of the engine. The tension on the cover for the cold air opening may be regulated to a nicety and the position of the operating rod 10 may be changed to give the best results the position being readily ascertained by the working of the engine.

I claim 1. A compensator for carbureter air supply comprising a casing provided with inlet and outlet openings, and with a cold air opening in the top of the casing, a cover for said opening, a spring normally tending to hold the cover in a closed position, baffle plates arranged in the casing between said openings, an expansion chamber in the casing, and a vertically arranged rod movable by said expansion chamber and having a bearing against the under face of the said cover.

5 said opening,

ing, a vertically arranged rod movable by 10 said. expansion chamber and having a bear- Copies of this patent may be obtained for five cents each, by addressing the ing against the under face of the said cover, and means for moving the upper end of the rod laterally.

In testimony whereof, I have signed this specification in the presence of two subscribing Witnesses.

LOUIS WILHELM. Witnesses:

C. L. WEED, F. C. EARLE.

Commissioner of Patents,

Washington, D. 0.- 

